I’ m tired out. I ______ all afternoon and I don’t seem to have finished anything.
| A．shopped |
| B．have shopped |
| C．had shopped |
| D．have been shopping |
The childrenlost in the woods; otherwise, they would have been at the lakeside camp as scheduled.
| A． | must have got | B． | must get | C． | should have got | D． | should get |
It remains to be seenthe newly formed committee's policy can be put into practice.
| A． | that | B． | which | C． | what | D． | whether |
Marco Polo is said to have sailed on _______Pacific Ocean on his way to Java in ______thirteenth century.
| A．the; a | B．a;不填 | C．不填;the | D．the; the |
I have heard a lot good things about you _______ I came back from abroad.
| A．since | B．until | C．before | D．when |
Jim ______ a late night film at home when, right in the middle a thrilling scene, the television went blank.
| A．watched | B．had watched | C．was watching | D．would be watching |